Предмет: Математика, автор: 6829177993

на рисунке 12 угол АВД равен углу СВФ равны 50° вычислите величины угла ДВФ и АВф 30 баллов! срочно!!!​

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Автор ответа: Iryn95
22

Пошаговое объяснение:

Угол АВС - развернутый, значит равен 180°

∠ABD=∠FBC=50°

∠DBF=∠ABC-∠ABD-∠FBC

∠DBF=180-50-50=80°

∠ABF= ∠ABD+∠DBF

∠ABF=50+80=130°

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